diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3fe5a33ee..fd9bad552 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@
  - Creating new way of loading animations and sprites
  - Dragable mixin for components
  - Fix update+render of component children
+ - Moving size to Game instead of BaseGame
 
 ## 1.0.0-rc2
  - Improve IsometricTileMap and Spritesheet classes
diff --git a/doc/examples/animations/lib/main.dart b/doc/examples/animations/lib/main.dart
index 8e8dbd548..6d7db1814 100644
--- a/doc/examples/animations/lib/main.dart
+++ b/doc/examples/animations/lib/main.dart
@@ -1,7 +1,6 @@
 import 'package:flame/game.dart';
 import 'package:flame/gestures.dart';
 import 'package:flutter/gestures.dart';
-import 'package:flame/flame.dart';
 import 'package:flame/extensions/vector2.dart';
 import 'package:flame/sprite_animation.dart';
 import 'package:flame/components/sprite_animation_component.dart';
@@ -11,8 +10,7 @@ import 'dart:ui';
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
-  final Vector2 size = await Flame.util.initialDimensions();
-  final game = MyGame(size);
+  final game = MyGame();
   runApp(
     GameWidget(
       game: game,
@@ -81,8 +79,4 @@ class MyGame extends BaseGame with TapDetector {
   void onTapDown(TapDownDetails evt) {
     addAnimation(Vector2(evt.globalPosition.dx, evt.globalPosition.dy));
   }
-
-  MyGame(Vector2 screenSize) {
-    size.setFrom(screenSize);
-  }
 }
diff --git a/doc/examples/aseprite/lib/main.dart b/doc/examples/aseprite/lib/main.dart
index 83a6c000d..9dfa1d8b7 100644
--- a/doc/examples/aseprite/lib/main.dart
+++ b/doc/examples/aseprite/lib/main.dart
@@ -1,4 +1,3 @@
-import 'package:flame/flame.dart';
 import 'package:flame/game.dart';
 import 'package:flame/sprite_animation.dart';
 import 'package:flame/extensions/vector2.dart';
@@ -6,20 +5,14 @@ import 'package:flame/components/sprite_animation_component.dart';
 import 'package:flutter/material.dart';
 
 void main() async {
-  WidgetsFlutterBinding.ensureInitialized();
-  final Vector2 size = await Flame.util.initialDimensions();
   runApp(
     GameWidget(
-      game: MyGame(size),
+      game: MyGame(),
     ),
   );
 }
 
 class MyGame extends BaseGame {
-  MyGame(Vector2 screenSize) {
-    size = screenSize;
-  }
-
   @override
   Future<void> onLoad() async {
     final image = await images.load('chopper.png');
diff --git a/doc/examples/nine_tile_box/lib/main.dart b/doc/examples/nine_tile_box/lib/main.dart
index b2d345280..15b89c053 100644
--- a/doc/examples/nine_tile_box/lib/main.dart
+++ b/doc/examples/nine_tile_box/lib/main.dart
@@ -1,5 +1,4 @@
 import 'package:flame/game.dart';
-import 'package:flame/flame.dart';
 import 'package:flame/nine_tile_box.dart';
 import 'package:flame/sprite.dart';
 import 'package:flame/extensions/vector2.dart';
@@ -8,9 +7,8 @@ import 'package:flutter/material.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  final size = await Flame.util.initialDimensions();
 
-  final game = MyGame(size);
+  final game = MyGame();
   runApp(
     GameWidget(
       game: game,
@@ -19,11 +17,8 @@ void main() async {
 }
 
 class MyGame extends Game {
-  Vector2 size;
   NineTileBox nineTileBox;
 
-  MyGame(this.size);
-
   @override
   Future<void> onLoad() async {
     final sprite = Sprite(await images.load('nine-box.png'));
diff --git a/doc/examples/render_flip/lib/main.dart b/doc/examples/render_flip/lib/main.dart
index 3b1695269..55b462a4d 100644
--- a/doc/examples/render_flip/lib/main.dart
+++ b/doc/examples/render_flip/lib/main.dart
@@ -1,6 +1,5 @@
 import 'package:flame/sprite_animation.dart';
 import 'package:flame/components/sprite_animation_component.dart';
-import 'package:flame/flame.dart';
 import 'package:flame/game.dart';
 import 'package:flame/extensions/vector2.dart';
 import 'package:flutter/material.dart' hide Image;
@@ -8,8 +7,7 @@ import 'dart:ui';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  final Vector2 size = await Flame.util.initialDimensions();
-  final game = MyGame(size);
+  final game = MyGame();
   runApp(
     GameWidget(
       game: game,
@@ -56,8 +54,4 @@ class MyGame extends BaseGame {
       ),
     );
   }
-
-  MyGame(Vector2 screenSize) {
-    size.setFrom(screenSize);
-  }
 }
diff --git a/doc/examples/sprite_batch/lib/main.dart b/doc/examples/sprite_batch/lib/main.dart
index fa4faa1cb..6b4abd0fa 100644
--- a/doc/examples/sprite_batch/lib/main.dart
+++ b/doc/examples/sprite_batch/lib/main.dart
@@ -1,6 +1,5 @@
 import 'dart:math';
 
-import 'package:flame/flame.dart';
 import 'package:flutter/material.dart';
 import 'package:flame/game.dart';
 import 'package:flame/sprite_batch.dart';
@@ -9,8 +8,7 @@ import 'package:flame/components/sprite_batch_component.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  final Vector2 size = await Flame.util.initialDimensions();
-  final game = MyGame(size);
+  final game = MyGame();
   runApp(
     GameWidget(
       game: game,
@@ -21,13 +19,8 @@ void main() async {
 class MyGame extends BaseGame {
   SpriteBatch spriteBatch;
 
-  MyGame(Vector2 screenSize) {
-    size = screenSize;
-
-    initData();
-  }
-
-  void initData() async {
+  @override
+  Future<void> onLoad() async {
     spriteBatch = await SpriteBatch.withAsset('boom3.png');
 
     spriteBatch.add(
diff --git a/doc/examples/sprites/lib/main.dart b/doc/examples/sprites/lib/main.dart
index b18a2d180..de5ce9d77 100644
--- a/doc/examples/sprites/lib/main.dart
+++ b/doc/examples/sprites/lib/main.dart
@@ -1,15 +1,13 @@
 import 'dart:math';
 
 import 'package:flame/components/sprite_component.dart';
-import 'package:flame/flame.dart';
 import 'package:flame/game.dart';
 import 'package:flame/extensions/vector2.dart';
 import 'package:flutter/material.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
-  final Vector2 size = await Flame.util.initialDimensions();
-  final game = MyGame(size);
+  final game = MyGame();
   runApp(
     GameWidget(
       game: game,
@@ -18,10 +16,6 @@ void main() async {
 }
 
 class MyGame extends BaseGame {
-  MyGame(Vector2 screenSize) {
-    size = screenSize;
-  }
-
   @override
   Future<void> onLoad() async {
     final r = Random();
diff --git a/doc/examples/text/lib/main.dart b/doc/examples/text/lib/main.dart
index 2792c479a..45264e531 100644
--- a/doc/examples/text/lib/main.dart
+++ b/doc/examples/text/lib/main.dart
@@ -3,18 +3,16 @@ import 'dart:ui';
 import 'package:flame/anchor.dart';
 import 'package:flame/components/text_box_component.dart';
 import 'package:flame/components/text_component.dart';
-import 'package:flame/flame.dart';
 import 'package:flame/game.dart';
 import 'package:flame/palette.dart';
 import 'package:flame/text_config.dart';
 import 'package:flame/extensions/vector2.dart';
 import 'package:flutter/material.dart';
 
-void main() async {
-  final Vector2 size = await Flame.util.initialDimensions();
+void main() {
   runApp(
     GameWidget(
-      game: MyGame(size),
+      game: MyGame(),
     ),
   );
 }
@@ -54,8 +52,8 @@ class MyTextBox extends TextBoxComponent {
 }
 
 class MyGame extends BaseGame {
-  MyGame(Vector2 screenSize) {
-    size = screenSize;
+  @override
+  Future<void> onLoad() async {
     add(TextComponent('Hello, Flame', config: regular)
       ..anchor = Anchor.topCenter
       ..x = size.x / 2
diff --git a/doc/examples/with_widgets_overlay/lib/example_game.dart b/doc/examples/with_widgets_overlay/lib/example_game.dart
index 9f0ed08b5..463a78a51 100644
--- a/doc/examples/with_widgets_overlay/lib/example_game.dart
+++ b/doc/examples/with_widgets_overlay/lib/example_game.dart
@@ -10,6 +10,11 @@ class ExampleGame extends Game with TapDetector {
   @override
   void update(double dt) {}
 
+  @override
+  Future<void> onLoad() async {
+    print('game loaded');
+  }
+
   @override
   void render(Canvas canvas) {
     canvas.drawRect(
diff --git a/lib/game/base_game.dart b/lib/game/base_game.dart
index c9f66ad1a..1d12acb53 100644
--- a/lib/game/base_game.dart
+++ b/lib/game/base_game.dart
@@ -31,10 +31,6 @@ class BaseGame extends Game with FPSCounter {
   /// Components to be removed on the next update
   final Set<Component> _removeLater = {};
 
-  /// Current game viewport size, updated every resize via the [resize] method hook
-  final Vector2 size = Vector2.zero();
-  set size(Vector2 size) => this.size.setFrom(size);
-
   /// Camera position; every non-HUD component is translated so that the camera position is the top-left corner of the screen.
   Vector2 camera = Vector2.zero();
 
@@ -142,7 +138,7 @@ class BaseGame extends Game with FPSCounter {
   @override
   @mustCallSuper
   void onResize(Vector2 size) {
-    this.size.setFrom(size);
+    super.onResize(size);
     components.forEach((c) => c.onGameResize(size));
   }
 
diff --git a/lib/game/game.dart b/lib/game/game.dart
index 51f890524..02018e410 100644
--- a/lib/game/game.dart
+++ b/lib/game/game.dart
@@ -23,6 +23,9 @@ abstract class Game {
   final assets = AssetsCache();
   BuildContext buildContext;
 
+  /// Current game viewport size, updated every resize via the [resize] method hook
+  final Vector2 size = Vector2.zero();
+
   bool get isAttached => buildContext != null;
 
   /// Returns the game background color.
@@ -40,8 +43,11 @@ abstract class Game {
 
   /// This is the resize hook; every time the game widget is resized, this hook is called.
   ///
-  /// The default implementation does nothing; override to use the hook.
-  void onResize(Vector2 size) {}
+  /// The default implementation just sets the new size on the size field
+  @mustCallSuper
+  void onResize(Vector2 size) {
+    this.size.setFrom(size);
+  }
 
   /// This is the lifecycle state change hook; every time the game is resumed, paused or suspended, this is called.
   ///
diff --git a/lib/game/game_widget.dart b/lib/game/game_widget.dart
index 0724e8ed1..4aec4634a 100644
--- a/lib/game/game_widget.dart
+++ b/lib/game/game_widget.dart
@@ -6,6 +6,7 @@ import 'game.dart';
 import '../gestures.dart';
 import '../components/mixins/dragable.dart';
 import '../components/mixins/tapable.dart';
+import '../extensions/size.dart';
 import 'game_render_box.dart';
 
 typedef GameLoadingWidgetBuilder = Widget Function(
@@ -94,11 +95,14 @@ class GameWidget<T extends Game> extends StatefulWidget {
 class _GameWidgetState extends State<GameWidget> {
   Set<String> activeOverlays = {};
 
+  Future<void> _gameLoaderFuture;
+  Future<void> get _memoizedGameLoaderFuture =>
+      _gameLoaderFuture ?? (_gameLoaderFuture = widget.game.onLoad());
+
   @override
   void initState() {
     super.initState();
     addOverlaysListener(widget.game);
-    loadingFuture = widget.game.onLoad();
   }
 
   @override
@@ -107,8 +111,10 @@ class _GameWidgetState extends State<GameWidget> {
     if (oldWidget.game != widget.game) {
       removeOverlaysListener(oldWidget.game);
       addOverlaysListener(widget.game);
+
+      // Reset the loader future
+      _gameLoaderFuture = null;
     }
-    loadingFuture = widget.game.onLoad();
   }
 
   @override
@@ -137,9 +143,6 @@ class _GameWidgetState extends State<GameWidget> {
     });
   }
 
-  // loading future
-  Future<void> loadingFuture;
-
   @override
   Widget build(BuildContext context) {
     Widget internalGameWidget = _GameRenderObjectWidget(widget.game);
@@ -177,21 +180,29 @@ class _GameWidgetState extends State<GameWidget> {
     final stackedWidgets = [internalGameWidget];
     _addBackground(context, stackedWidgets);
     _addOverlays(context, stackedWidgets);
+
+    final textDir = widget.textDirection ??
+        Directionality.maybeOf(context) ??
+        TextDirection.ltr;
+
     return Directionality(
-      textDirection: widget.textDirection ??
-          Directionality.maybeOf(context) ??
-          TextDirection.ltr,
+      textDirection: textDir,
       child: Container(
         color: widget.game.backgroundColor(),
-        child: FutureBuilder(
-          future: loadingFuture,
-          builder: (_, snapshot) {
-            if (snapshot.connectionState == ConnectionState.done) {
-              return Stack(children: stackedWidgets);
-            }
-            return widget.loadingBuilder != null
-                ? widget.loadingBuilder(context, snapshot.hasError)
-                : Container();
+        child: LayoutBuilder(
+          builder: (_, BoxConstraints constraints) {
+            widget.game.onResize(constraints.biggest.toVector2());
+            return FutureBuilder(
+              future: _memoizedGameLoaderFuture,
+              builder: (_, snapshot) {
+                if (snapshot.connectionState == ConnectionState.done) {
+                  return Stack(children: stackedWidgets);
+                }
+                return widget.loadingBuilder != null
+                    ? widget.loadingBuilder(context, snapshot.hasError)
+                    : Container();
+              },
+            );
           },
         ),
       ),